Calculate the energy in joule corresponding to light of wavelength 45nm

Calculate the energy in joule corresponding to light of wavelength 45nm.(Plank’s constant , h=6.63 ˣ 10⁻³⁴ Js, speed of light , c = 3 ˣ 10⁸ ms⁻¹)

Options

(a) 6.67 ˣ 10¹⁵
(b) 6.67 ˣ 10¹¹
(c) 4.42 ˣ 10⁻¹⁵
(d) 4.42 ˣ 10⁻¹⁸

Correct Answer:

4.42 ˣ 10⁻¹⁸

Explanation:

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